> 1.Ich habe ein Buch gelesen. (I read a book.)What did I read? A book. - Accusative case. The right answer is “ein”, because “das Buch” is of neuter gender.>2.Ich trinke einen Kaffee. (I am drinking a coffee.)What do I drink? A coffee. - Accusative case. The right answer is “einen”, because the noun “der Kaffee” is of masculine gender.

>3.Die verlorene Katze wurde in einem Haus gefunden. (The lost cat was found in a house.)Where was the lost cat found? In a house. - Dative case. The righ answer is “einem”, because the noun “das Haus” is of neuter gender.

>5.Ein deutscher Spieler hat ein Tor geschossen. (A german player shoot a goal.)Who shoot a goal? A german player. - Nominative case. The right answer is “ein”, because the noun “der Spieler” is of masculine gender.

>6.Einer Frau ist die Tasche gestohlen worden. (The purse of a woman got stolen.)Whom purse got stolen? Of a woman - Dative case. The right answer is “einer”, because the noun “die Frau” is of feminine gender.

>7.Das Auto liegt in einem Parkplatz. (The car lies in a parking lot.)Where lies the car? In a parking lot. - Dative case. The right answer is “einem”, because the noun “der Parkplatzt” is of masculine gender.

>8.Möchtest du eine Limonade? (Would you like a limonade?)What would you like? A limonade. - Accusative case. The right answer is “eine”, because the noun “die Limonade” is of feminine gender.

>9.Das Spielzeug eines Kindes. (The toy of a child.)Whose toy? Of a child/a child's. - Genitive case. The right answer is “eines”, because the noun “das Kind” is of neuter gender.

>10.Mein Freund hat einen Hund. (My friend has a dog.)What has my friend? A dog. - Accusative case. The right answer is “einen”, because the noun “der Hund” is of masculine gender.